Praising Naomi Osaka for becoming the first Japanese tennis player to win Australian Open, Japanese Prime Minister Shinzo Abe tweeted, "I am very proud of the emergence of a new queen. I look forward to your continued accomplishments." The 21-year-old defeated Petra Kvitova 7-6(7-2), 5-7, 6-4 in two hours and 27 minutes in the final on Saturday.